Make My Class NotInheritable But Inheritable From Within Library Scope?
Dec 17, 2009How to make my class NotInheritable but Inheritable from within the library scope (friend)
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VB2010: #Cosnt Scope - Compile The Library With Different Code Inside Class
Mar 19, 2011Once time, me needed to compile the library with different code inside class which determined with prroject wich inherits this library At first I tried in project declare #const and in library to use condition with #const,
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How To Make Class / Increasing Object Scope
Jul 9, 2011I am struggling to do what i want with classes at the moment as they are killed off at the end of a method, can somebody let me know how to make the classes live until i tell them to die? so that i can create one and refer to it from another method at another time? For example On form load i create a class Dog.Then later on i want to get info from the Class Dog. But it is no longer instantiated
View 6 RepliesAdd Event To Public NotInheritable Class?
Dec 24, 2009Can i add an event to a Public NotInheritable Class?, in particular i would need to have an event that would listen to property change.System.Web.ClientServices.ConnectivityStatus has a property IsOffline, i would need to know when this property has changed?
Any other way to achieve this?VB.NET to C#[URL]..
Declare As A Sealed Class (non-inheritable)
Aug 16, 2010How to declare this as a sealed class (non-inheritable) I used this in my main coding..
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Importing An Enum Into A Visual Basic Class So That It Becomes Inheritable
Nov 16, 2011Here is what I have in my file
Option Strict On
Imports MyNameSpace.MyEnum
Public Class AwesomeClass
[Code].....
But since MyEnum isn't defined in the subclass it won't work. I am not very familiar with what these types of things are called, but I think that I am import a type definition of sorts. Since I am Importing, and not defining, it is only available in the first file. Basically, I want to include MyEnum as part of the class but I don't how to do it. I don't want to copy/paste it over, and I don't really want to write Imports ... at the top of all of my subclasses.
VS 2008 Option To Serializing A Non-Inheritable Third-Party API Class?
Jul 19, 2011this is an interesting problem and to be honest, I'm not sure there's a solution to it. But thought I'd ask the brain-trust here and see what comes up.I'm developing a dll that is loaded and ran within a third-party application. The third-party company provides an API to use that leverages their application's internal objects so that I can automate our processes. It's really pretty slick. They have a class object that represents the internal structure of their supported documents, appropriately titled Database. I would like to serialize the Database class using the ConfigurationConverterBase (to create a TypeConverter for conversion to and from) in conjunction with custom configuration elements and properties to store this information and retrieve when necessary. I've created the converter and all the necessary code for the custom configuration process. And it all works like a charm with one exception... the Database object does not have the Serializeable attribute applied.
Since I don't have control over the API they developed, I cannot simply add it. And since it is sealed, I cannot inherit it. This leaves me with an ugly option of converting the document to a temporary file that is a text-based version of it, then streaming it into memory before creating a binary format that can be saved into the config file. This is an ugly approach, but will get the job done.
Does anyone know how to work around the original issue for a more streamlined approach?
Does Making A Class NotInheritable In .NET Offer The Same (potential) Compiler Optimizations As Sealed In C#?
Jan 11, 2010I've read that making a class sealed in C# is advisable in high-performance scenarios because it frees the compiler to make certain optimizations (e.g., inlining property getters) that it wouldn't be able to make otherwise. Is the same true for NotInheritable in VB.NET?
View 1 RepliesVS 2008 How To Make Class Library
Apr 7, 2010Public Function Add(ByVal Number1 As Integer, ByVal Number2 As Integer)
Try
Return Number1 + Number2
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Make Form Private In Class Library?
Feb 27, 2012I'm programming a class library, i want to add form but i need this form to be private so it cannot be seen from outside the library.
View 4 RepliesServer Path - Added New Project Class Library To Make Dll File
Jun 14, 2009I am just added new project class library to make dll file. when i write the first line i got this problem
Dim objStreamReader
As
New
StreamReader(Server.MapPath("TextFile.txt"))
name 'server' is not declared
VB2010 Class Library: Create A Static Library Instead Of DLL?
Jun 21, 2011I have a Visual Basic Class Library project. It generates a DLL. Is there a method to generate a static .LIB to which I can do a static link?Alternatively, can I do a static link against a DLL?
View 6 RepliesVariable Scope Outside A Class?
Jun 12, 2011how to declare scope for variables outside their class?
Here's what i have in a class known Create_User:
Public Class Create_User
Public conn As New SqlConnection(My.Settings.HotelConnectionString)
Public usercmd As SqlCommand
[Code]....
How can i increase the scope of these variables to be used in another class? I dont want to keep declaring them again and again.
Narrowing The Scope Of Sub In Inherited Class?
Apr 5, 2011Below is example code of what I want to do:
Public Class Test
Sub New()
Dim cool As New B
cool.Doit()
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Call New Class With Global Scope From Function?
Dec 4, 2011I want to create a new instance of a class when I click on a button, but I need to interact with members of that class using other controls on the form, so I need the class to have a global scope. I know I could call the new class in formload, but the class creates certain variables that need to be current. If it is done on formload, the variables wouldn't be current, because if the class is created at formload, it would have different info at that time. Surely, there must be a way to create an instance of the myClass from within a sub that is accessible from other subs of the same class.
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Adding A Windows Service Class To A Class Library
Feb 14, 2012I have a class library in VB.NET that does a NET-envelope for an USB device driver.There is only one function of that driver that I could not envelope in a traditional class, but I had to put it in a Windows Service as described here:Sharing a class property (field) between applications.The Windows Service works fine, but I have now two projects for my NET-envelope: the one with the class library, the second with the windows service and I do not like the idea to maintain two distinct projects for the same driver.Is it a good practice (or even if possible) to add a windows service class to a normal class library (without creating its own project as described in the vb tutorial)?I know, in any case I should create a separate setup only for the windows service, but in this way I could have together all the classes that envelope my usb device driver in only one project.
View 1 RepliesCreating An Instance Of A Class From A Class Library?
May 18, 2010I've createda vb.net class library where I've defined a number of small classes... nothing complicated, just working with strings, sending emails, etc.In another project, I reference the class library and I'm seemingly able to create an instance ofone of tclasses - intellisense shows me all of the plic properties, methods, etc... all looks perfect. No compile errors at all, nothing b gumdropsand lollipops.When I run the app I'm working on that references the class library, it fails at the point where I'm creating an instance of the class and gives me a vague exception, "System.TypeLoadException".
View 2 RepliesPrivate And Public Class At Class Library
Mar 12, 2011I'm posting this there is a relationship with my previous post [URL]
I have two projects, namely:
1. Project1 (Windows Application)
2. Project2 (Class Library)
in Project2 there are several classes:
* frmLogin.vb
* frmCustomer.vb
* clsGlobals.vb
in my case, I want to frmLogin.vb and frmCustomer.vb not called in Project1 and I can only call is clsGlobals.vb
Made A Class Using New->Class Library
Nov 17, 2009I have made a class using New->Class Library. I have 2 constructors, 1 function (that computes length of circle), one subroutine that computes area of circle, and main subroutine.
Public Class Class1
Class Circle
Dim rad As Double
[CODE]...
My problem is when I try to run the program: No errors of syntax.
What I must do? I need to right click in solution explorer add new item->add->class and copy here this code?
After I write the code I chose from the vb menu: Build->Build Solution_name
Before writing the code I choose File->New->and selected class library then save all to save as a project.
Or class library is only a dll file that runs with a windows forms application. (that is added after i write the code for write library).
.dll In Class Library?
Dec 29, 2009there's a lot of dlls i've got one in the Release folder and one in the Debug folder under bin, there seem to be one in the obj folder as well.they all seem to work fine, but which should be the correct one?
View 4 RepliesClass Library Or Not?
Oct 18, 2010I have two projects; A and B, where B needs to use some classes that are in project A. Hence, I added B to A's solution, and in B I added a reference to project A.
Is that sensible? Or should I rather put those classes in a class library?
I see that if I further want to open form/program B from a menu option in project A, then A needs a reference to B. Which would not be possible if B already had a reference to A. However if I use the class library for the common classes, then it's ok as B doesn't need the A reference.
Does this sound logical? It would be nice to know what are typical reasons for putting projects in the same solution, and if it's advised to use libraries aggressively to refactor common code between two projects, even if it's just a couple of classes.. Yet I've never made my own library, so a bit unsure on when to use it.
ConnectionString In Class Library
Apr 27, 2011I'm merging two of my projects that can share a lot of the same classes into one solution with two web applications and a shared class library.
I've literally just dumped all the classes into the class library project and as expected I've got a ton of errors to fix. My main problem at the moment is the connection string. Currently I have this (which is obviously not going to work):
''' <summary>
''' Initialise the data access layer by loading the database connection string from the Web.Config file
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Build My Own Class Library?
Oct 18, 2009Can I create my own class library, possibly to be sold commercially, in VB.NET?
View 2 RepliesClass Library (DLL) And Distributing?
Oct 7, 2011I'm in the midst of developing a class library DLL for a third party application. On my machine, the developers machine, things are going along smoothly. I can compile/build and my DLL is loaded, and thus works as expected.
I've been copying the contents of the Release directory from C:Solutions...Release to C:ProgramDirectory. I realize now that my DLL is loaded into memory from the Release folder, and not the folder I copied it to.The point being of course, I want to distribute this third-party add-in to my users. And sure enough when I try that, presumably the DLL isn't loaded into memory and thus not available to the user, like it is on my machine.
I tried the first obvious thing and registering the DLL on the user's machine, but that failed."The module "..." was loaded but the entry-point DLLRegisterServer was not found." It's apparent I am missing some key step or caveat when it comes to developing this class library.
Class Library Access In WCF?
Jun 30, 2011I have two classes in two files in a class library project, they are:
Public Class Logins
Public CurrentUser As Login
Public Function Authenticate(ByVal id As String, ByVal pw As String)
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Class Library Events?
Mar 6, 2012I`ve made a .NET component in C#. After that, i`ve created a class library in VB.NET and added this C# component and a couple of buttons to the library (creating another component now with buttons). So far, so good.The problem is: when i use this final component (vb.net class library), i want to link all MouseClick Events of its own components (buttons and C# component). In other words, when i add this final class library to my VB solution, it has its own MouseClick event. But when i click inside it doesnt raise the click event unless i do not click in the buttons or in the C# component inside it. I want to raise this event in the application wherever i click (inside or outside its own components).
View 14 RepliesConvert A Class Library For Use In GAC?
Sep 18, 2009My objective is to take a .vb class file that is used on multiple local applications/web sites and convert it to a .dll file that would would be deployed to the servers that we use.The code all works, I can build my class library project with Visual Studios 2008 Pro and end up with a DLL.I can then drag and drop the DLL into any application or website and use it successfully What I'm missing is how to compile it correctly so it will do two things;
1. Get it to show up as a .NET component
2. Get it to NOT scream at me when I try to reference it.
I think part of my problem is that I've been looking up assemblies and dll's when maybe I should have been looking at component authoring.No, I don't want to just stick with the drag and drop into local bins. I might as well just copy and paste the original .vb at that point.
Set Parameter In Class Library?
Jun 10, 2009I want set in class library like this [code]....
View 4 RepliesUsing App.config In A Class Library
Jun 30, 2008I was dangerously close to high-jacking another thread, so I thought I should create my own. We make class libraries so we won't duplicate code, but what about settings? I have a large solution that I've created a project in for common material, which includes an app.config. The problem is that a class library isn't an "app" so my functions can't get to the values. How do I get around this?
View 20 RepliesUsing The Namespace In A Class Library?
Aug 15, 2010I am attempting to use the My.Computer.FileSystem namespace in a WPF VB.NET usercontrol library. I get no Intellisense etc for this namespace. I imagine I need to add a reference but no amount of googling has fixed this and VS.
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